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4.4.2. Driver Related Map Descriptor Parameters
Column
Title
Function Legal Values
Node_Name Name of Node to fetch data from
One of the node names
specified in “Client Node
Descriptor” above
Data_Type
Data type. This parameter is not required
except when defining Map Descriptors
which write DOW (Day of Week) and
Time value to the Carrier devices. When
a write Map Descriptor checks the data
type it uses the information to convert the
value extracted from the FieldServer’s
Data Arrays into a suitable format for a
write. Refer to Section 4.4.7.
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Occupancy_Time
Occupancy_DOW
Length
Length of Map Descriptor. When reading
a compete table, set the length to the
maximum number of data values you
want stored. Additional information on the
length parameter is provided in Appendix
A.5.
1 – 1000
Address This commonly used parameter is not required for this driver.
Table_Name
The name of the table to be polled, e.g.
DISPLAY. Some system elements have
multiple instances of the same table
name. For example, the Terminal System
Manager has 64 Temperature Zone
configuration tables named TZONE1
though TZONE64. These tables are
accessed by using both the primary &
secondary table names, e.g. ‘TZCONF
TZONE1’
Only ASCII characters are
permitted.
When using the table
name parameter to specify
a primary and secondary
table, leave a single space
between the two names.
Field_Name*
If you wish to read the whole table, leave
the field name blank or specify
‘EVERYTHING’.
Only ASCII characters are
permitted. Field names
never contain spaces.
They may not be longer
than 10 characters long.
Store_As*
Use the Ascii or AsciiLog format when you
are discovering the variables contained in
a table by reading a table. Refer to 1.1
Ascii, AsciiLog, Values
4.4.3. Timing Parameters
Column Title Function Legal Values
Scan_Interval Rate at which data is polled >0.1s